You clearly know better than Pogacar himself who said he needs to train differently and weigh a bit more to really be a contender for Roubaix. Writing things like that is why I barely take you seriously. This echo chamber isn't helping you think logically.
And sure, Pogacar is from another planet, he has never lost a monument, classic or WC against MVDP or WVA. Oh wait...
Surely a bit more mass and power would help Pogacar in PR but I think the biggest problem is that Vans are faster than him and there are no hills for him to beat them before. He would have to rely on some luck (it can happen in PR of course). I definitely don't think he would be crushed though: he has an awesome engine and after some finetuning he would be a force to reckon with in PR.